Emerson 3051S Specifications Page 84

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74
Reference Manual
00809-0100-4001, Rev JA
Section 4: Operation and Maintenance
November 2012
Operation and maintenance
Table 4-1. Recommended calibration tasks
Note
The 3051 has been carefully calibrated at the factory. Trimming adjusts the position of the
factory characterization curve. It is possible to degrade performance of the transmitter if any
trim is done improperly or with inaccurate equipment.
Note
A Field Communicator is required for all sensor and output trim procedures. Rosemount 3051C
Range 4 and Range 5 transmitters require a special calibration procedure when used in
differential pressure applications under high static line pressure (see“Select Finish to
acknowledge the method is complete.” on page 84).
4.3.1 Determining calibration frequency
Calibration frequency can vary greatly depending on the application, performance
requirements, and process conditions. Use the following procedure to determine calibration
frequency that meets the needs of your application.
Transmitter Bench calibration tasks Field calibration tasks
3051CD
3051CG
3051L
3051TG, Range
1-4
1. Set output configuration parameters:
a. Set the range points.
b. Set the output units.
c. Set the output type.
d. Set the damping value.
2. Optional: Perform a sensor trim.
(Accurate pressure source required.)
1. Reconfigure parameters if
necessary.
2. Zero trim the transmitter to
compensate for mounting effects
or static pressure effects.
3. Optional: Perform an analog
output trim. (Accurate
multimeter required)
3051CA
3051TA
3051TG, Range 5
1. Set output configuration parameters:
a. Set the range points.
b. Set the output units.
c. Set the output type.
d. Set the damping value.
2. Optional: Perform a sensor trim if
equipment available (accurate absolute
pressure source required), otherwise
perform the low trim value section of
the sensor trim procedure.
1. Reconfigure parameters if
necessary.
2. Perform low trim value section of
the sensor trim procedure to
correct for mounting position
effects.
3. Optional: Perform an analog
output trim (Accurate
multimeter required)
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